82443 has 4 divisors (see below), whose sum is σ = 109928. Its totient is φ = 54960.

The previous prime is 82421. The next prime is 82457. The reversal of 82443 is 34428.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 82443 - 2⁹ = 81931 is a prime.

It is a d-powerful number, because it can be written as 8 + 2⁹ + 4⁷ + 4⁸ + 3 .

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13738 + ... + 13743.

It is an arithmetic number, because the mean of its divisors is an integer number (27482).

2⁸²⁴⁴³ is an apocalyptic number.

82443 is a deficient number, since it is larger than the sum of its proper divisors (27485).

82443 is a wasteful number, since it uses less digits than its factorization.

82443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27484.

The product of its digits is 768, while the sum is 21.

The square root of 82443 is about 287.1288909183. The cubic root of 82443 is about 43.5229103784.

It can be divided in two parts, 82 and 443, that added together give a palindrome (525).

The spelling of 82443 in words is "eighty-two thousand, four hundred forty-three".